Ptc Thermistor Connection - Danfoss VLT AutomationDrive EZ FC 321 Programming Manual

VLT® AutomationDrive EZ FC 321
Programming Guide
Parameter 1-97 Thermistor Threshold Level
Table 141: Parameter 1-97 Thermistor Threshold Level
1-97 Thermistor Threshold Level
Default value: 80 °C
Conversion index: 100
Select the thermistor sensor threshold level for motor thermal protection.

4.2.10.1 PTC Thermistor Connection

R
(W)
4000
3000
1330
550
250
-20°C
Illustration 34: PTC Profile
Using a digital input and 10 V as supply: Example: The drive trips when the motor temperature is too high.
Parameter set-up:
•
Set parameter 1-90 Motor Thermal Protection to [2] Thermistor Trip.
•
Set parameter 1-93 Thermistor Source to [6] Digital Input.
92 | Danfoss A/S © 2021.08
Parameter type: Range, -40 - 220 °C
Data type: Int16
nominal -5°C
nominal + 5°C
nominal
[°C ]
Parameter Descriptions
Setup: 1 setup
Change during operation: True
AU373327181955en-000101 / 130R1208